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Composition for preparing glass fiber reinforced polypropylene material, material prepared from composition and application

A polypropylene material and composition technology, applied in the field of glass fiber reinforced polypropylene, can solve the problems of inability to strengthen and toughen, and achieve the effects of good mechanical and heat resistance, smooth surface, and dense and uniform cells

Pending Publication Date: 2021-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the reinforced phase-continuous phase interface is beneficial to improve the mechanical properties of composite foam materials, while the two types of interfaces, the reinforced phase-gas phase and the gas phase-continuous phase, cannot play the role of strengthening and toughening.

Method used

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  • Composition for preparing glass fiber reinforced polypropylene material, material prepared from composition and application
  • Composition for preparing glass fiber reinforced polypropylene material, material prepared from composition and application
  • Composition for preparing glass fiber reinforced polypropylene material, material prepared from composition and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] According to the addition of each material in Table 1, take by weighing dry polar monomer modified polypropylene (grafting rate 4wt%), glass fiber, compatibilizer, toughening agent and antioxidant, each component After mixing evenly, put it into a twin-screw extruder, and go through melt blending, extrusion and granulation to obtain a glass fiber reinforced polypropylene material. The processing temperature of the twin-screw extruder is: the temperature of the first zone is 150°C, the temperature of the second zone is 160°C, the temperature of the third zone is 165°C, the temperature of the fourth zone is 170°C, the temperature of the fifth zone is 170°C, the temperature of the sixth zone is 170°C, Head temperature 165°C.

[0058] Foaming and rolling process:

[0059] Add the above-mentioned glass fiber reinforced polypropylene material, foaming agent and processing aid according to the formula shown in Table 1 into a high-speed stirrer and mix at high speed for 1 minu...

Embodiment 2-7 and comparative example 1-3

[0064] The difference between Examples 2-7 and Comparative Examples 1-3 and Example 1 is only that the amount of each component used to prepare the glass fiber reinforced polypropylene material is different, wherein the polypropylene used in Comparative Examples 2 and 3 is unmodified polypropylene The grade of propylene is SP179; see Table 1 for the consumption of each component in Examples 2-7 and Comparative Examples 1-3.

Embodiment 8-11

[0066] The difference between Examples 8-11 and Example 2 lies in the grafting ratio of glycidyl methacrylate in polypropylene grafted with glycidyl methacrylate.

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Abstract

The invention provides a composition for preparing a glass fiber reinforced polypropylene material. The composition comprises the following components in parts by weight: 100 parts of polar monomer modified polypropylene; 1-30 parts of a compatilizer; 0.3-5 part of a toughening agent; and 25-100 parts of glass fiber. A foamed plate prepared by foaming the glass fiber reinforced polypropylene material prepared from the composition has the characteristics of smooth surface, compact cells, uniform cell diameter, closed-cell hard structure, good impact property and the like.

Description

technical field [0001] The present invention relates to a kind of composition used for preparing glass fiber reinforced polypropylene material and its prepared material and application, in particular to a kind of composition used for preparing glass fiber reinforced polypropylene material, which is prepared from the composition Glass fiber reinforced polypropylene, glass fiber reinforced polypropylene foam profiles and their applications. Background technique [0002] In recent years, because polypropylene has good mechanical properties, chemical stability and low price, its glass fiber reinforced and modified products are widely used in automobiles, home appliances, furniture and other industries. However, polypropylene is a non-polar highly crystalline polymer, which has poor compatibility with glass fibers, resulting in poor toughness of products, large molding shrinkage, and floating fibers on the surface. At present, silane coupling agents are mainly used to modify the...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08L53/02C08K7/14C08J9/10C08J5/04
CPCC08J9/103C08J9/107C08J9/105C08J5/043C08J2351/06C08J2451/06C08J2453/02C08J2203/04C08J2203/20
Inventor 郭鹏张琦吕明福徐耀辉张师军邵静波权慧
Owner CHINA PETROLEUM & CHEM CORP
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